A new synthesis of β-amino acids by use of ketene diethyl acetal as enolate equivalent
作者:Kai Rossen、Pavol Jakubec、Michael Kiesel、Matthias Janik
DOI:10.1016/j.tetlet.2005.01.114
日期:2005.3
Reaction of phenylsulfonyl formamides, readily available in a single step from an aromatic aldehyde and sodium phenylsulfinate, with ketene diethyl acetal under basic conditions gives N-formyl β-amino acid esters in good yield, which can be kinetically resolved with a lipase.
在碱性条件下,可轻松地从芳族醛和苯基亚磺酸钠单步获得的苯磺酰基甲酰胺与乙烯酮二乙缩醛在碱性条件下反应,可得到良好收率的N-甲酰基β-氨基酸酯,可以用脂肪酶动力学拆分。